I put my color space in 16bpc and the clipped highlights show pink/purple pixels. i thought they were just warning, but when I render them out, they show up still. They don't show in 8 bpc. i tried other projects I have, but with teh same result. After effects CS5.5 Picture is attached.

Thanks for the reply. I tried the HDR Expander and, unfortunately, it didn't work. It seems the problem is with the Avid DNxHD codec. Animation, cineform other codecs work fine with this same footage, just DNxHD (all flavors from 36-175 10bit) is giving me the pink/purple clipped highlights in 16 bpc and 32 bpc.